(;GM[1]FF[4]CA[UTF-8]AP[CGoban:2]ST[2]
RU[Japanese]SZ[19]KM[0.00]
PW[White]PB[Black]AW[lc][re]AB[nc][pd]LB[lc:1][nc:2][qd:A][rd:C][re:3][qf:B]C[Whte 3 is hamete. How should Black respond - A, B, or C]
(;B[qd]CR[qd]
;W[qh]LB[aa:A][rd:B]CR[qh]C[Play A (tuneki) or B]
(;B[rd]CR[rd]
;W[ic]LB[qd:1][rd:2][re:A]CR[ic]C[Black at R16 left a weakness at S16. Black can only defend this weakness with gote and in doing so had to play two moves (1 and 2) to defend against the hamete stone A.])
(;B[aa]CR[aa]
;W[rd]CR[rd]
;B[rc]CR[rc]
;W[rb]CR[rb]C[White responds with a tesuji]
(;B[qb]CR[qb]
;W[sc]CR[sc]C[Black ends up overly concentrated in the corner])
(;B[sc]CR[sc]
;W[pb]CR[pb]
;B[qb]CR[qb]
;W[oc]CR[oc]
;B[od]CR[od]
;W[nb]CR[nb]C[Black's position is over concentrated.])
(;B[qc]CR[qc]
;W[sc]CR[sc]C[Black ends up overly concentrated in the corner])))
(;B[qf]CR[qf]
;W[rf]CR[rf]
;B[qg]CR[qg]
;W[qc]CR[qc]
;B[pc]CR[pc]
;W[qb]CR[qb]C[After this exchange, Black's position is too cramped.])
(;B[rd]CR[rd]
;W[od]CR[od]C[S16 is the correct response to S15. However -- white plays another hamete and another problem for Black ensues.]
(;B[oc]CR[oc]
;W[qd]CR[qd]
(;B[qc]CR[qc]
;W[qe]CR[qe]C[This is what white is expecting]
(;B[rc]CR[rc]
;W[pe]CR[pe]
;B[pc]CR[pc]
;W[qi]CR[qi]C[The exchange is very favorable for white])
(;B[pe]CR[pe]
;W[rc]CR[rc]
;B[rb]CR[rb]
;W[sd]CR[sd]
;B[qb]CR[qb]
;W[pf]CR[pf]
;B[of]CR[of]
;W[og]LB[pf:A][og:B]C[These are very strong plays for white. Black's position is over concentrated, and White has taken part of the corner.]))
(;B[qe]CR[qe]
;W[qc]CR[qc]
;B[pe]CR[pe]
;W[rc]CR[rc]
;B[rf]CR[rf]
;W[sd]LB[qg:A]CR[sd]C[Black finishes with A. This may seem like a good exchange for Black. But Black's position is too heavy. If you come to understand this, then you are on your way to becoming a stronger player.]))
(;B[oe]CR[oe]
;W[qd]CR[qd]
;B[qc]CR[qc]
;W[qe]CR[qe]
;B[rc]CR[rc]
(;W[pc]CR[pc]C[CHOICE]
;B[pe]CR[pe]
;W[oc]CR[oc]
;B[nd]CR[nd]
;W[nb]LB[oa:B][mb:A]CR[nb]
(;B[mb]CR[mb]
;W[qb]CR[qb]
;B[rb]CR[rb]
;W[ne]CR[ne]C[Ouch. The cut is very painful])
(;B[oa]CR[oa]
;W[qb]CR[qb]
;B[pa]TR[oc][pc][od]CR[pa]C[RIGHT Black uses a tesuji and white loses the marked stones]))
(;W[pe]CR[pe]
;B[pc]CR[pc]
;W[nd]CR[nd]
;B[md]CR[md]
;W[ne]CR[ne]
;B[of]CR[of]
;W[oc]CR[oc]
;B[qg]TR[qd][pe][qe][re]CR[qg]C[RIGHT White loses the four marked stones and the White stones on the left are over concentrated. Black now has a good sized corner and room to expand]))))